Container dolly



FIG. 1 is a perspective view of a container dolly showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof, a rear elevational view being a mirror image thereof; and,

FIG. 4 is a side elevational view, a left side elevational view being a mirror image thereof. 

The ornamental design for a container dolly, as shown and described. 